Disk harrow.



G. W. WILLIS.

DISK HARROW. APPLICATION FILED NOV. 4, 1911.

1 ,02 1 1 74, v Patented Mar. 26, 1912.

UNITED STATES PATENT OFFICE.

GEORGE W. WILLIS, OF AUBURN, NEW YORK, ASSIGNOR T0 INTERNATIONAL HAR-VESTER COMPANY, A CORPORATION OF NEW JERSEY.

DISK HARROW.

Specification of Letters Patent.

Patented Mar. 26, 1912.

To all whom it may concern Be it known that I, Gnonon 1V, l/VILLIS, acitizen of the United States, residing at Auburn, in the county ofCayuga and State of New York, have invented certain new and usefulImprovements in Disk Harrows, of which the following is a specification.

My invention relates to disk harrows, and in particular to an improvedform of scrapers for the disks and means for securing them to theactuating rock shaft; the object of my invention being to provide ascraper formed from a single piece of steel,-eliminating all cast partsand providing an improved saddle member cooperating with a special formof bolt in a manner to rigidly secure the scrapers to the rock shaft.These objects are attained by means of the mechanism illustrated by theaccompanying drawings, in which- Figure 1 represents a top plan view ofpart of a disk harrow having my improved scraper mechanism forming apart thereof; Fig. 2 is an end elevation of Fig. 1, partly in section,and having the lower part of the disks cut away; Fig. 3 is a sideelevation on an enlarged scale, showing a part of the rock shaft with ascraper secured thereto; Fig. 4 is a top plan view of Fig. 3; and Fig. 5is an end elevation of the rock shaft, as shown in Fig. 3, and a sideview of the scraper blade secured thereto.

The same reference numerals designate like parts throughout the severalviews.

1 represents part of a disk gang, including an axle 2, spacing thimbles3, disks 4, bearing box 5, having the axle journaled therein, and draftframe member 6, having its rear end secured to the bearing box and thefront end thereof to the draft frame members 7 and 8 in a common way.

9 represents one of the vertical members of the gang frame, having itslower end secured to the bearing box and its upper end to a transversebar 10, and 11 represents a brace member having its rear end pivotallyconnected with bar 10 and the front end thereof with the draft frame.

12 represents rearwardly extending brackets secured to bar 10, and 13 arock shaft, preferably angular in cross section and journaled in theread ends of said brackets. The rock shaft is designed to be actuated byany of the usual means, as a foot or hand lever, not shown.

14 represents the scraper blade, having a laterally turned shank portion15 at one end thereof formed to receive the angular shaft, the oppositeend being made flat in order to fit closely against the surface of theadjacent disk, the shank portion of the blade being provided with araised rib portion 16 at the outer end thereof, the body of the scraperblade having a longitudinally extending depressed portion 17 throughouta portion of the length thereof that is merged with and terminates inthe angular shank portion, and gradually reduced in width and depth asit is, approaches the opposite end of the blade. The blade is secured tothe rock shaft by means of a U- bolt 18, the head of the bolt beingformed in a manner to fit closely against the angular shank. A saddlemember 19, having side walls 20, provided with notched portions 21,isplaced upon the corner of the shaft opposite the shank of the scraper,and a bolt passes through openings in the top wall of the saddle uponopposite sides of the shaft, and the parts are secured in place by meansof nuts 22. The rib portion 16 upon the shank prevents any endwisemovement thereof relative to the bolt.

WVhat I claim as my invention, and desire to secure by Letters Patent,is:

1. A scraper mechanism for disk harrows including, in combination, arock shaft angular in cross section, a scraper blade made from a singlepiece of sheet metal having a flat lower end and a longitudinallyarranged deprcssion in the body portion thereof terminating in alaterally turned shank portion at the upper end thereof that is adaptedto receive said angular rock shaft, a transversely arranged rib portionat the outer end of said shank raised above the body portion thereof,and means for securing said shank to said rock shaft.

2. A scraper-mechanism for disk harrows including, in combination, arock shaft angular in cross section, a scraper blade made from a singlepiece of sheet metal having a flat lower end and a longitudinallyarranged depression in the body portion thereof terminating in alaterally turned shank portion at the upper end thereof that is adaptedto receive said angular rock shaft, a transversely arranged rib portionat the outer end of said shank raised above the body portion thereof,and a U-bolt having its head portion adjacent said rib and operative tosecure said shank to said rock shaft.

3. A scraper mechanism for disk harroWs including, in combination, arock shaft angular in cross section, a scraper blade made from a singlepiece of sheet metal having a flat portion at one end and a laterallyturned shank portion at the opposite end thereof, and a longitudinallyarranged depression in the body portion thereof terminating in anangular depression in said shank and adapted to receive one angle ofsaid rock shaft, a transversely arranged rib portion at the outer end ofsaid shank raised above the body portion thereof, a saddle member havingangular notches adapted to receive the opposite angle of said rockshaft, and a -U-bolt having its head portion adjacent said rib andcooperating With said saddle member in a manner to automatically securesaid scraper to said rock shaft.

GEORGE W. WILLIS. Witnesses:

K. T. ELLIOTT, H. S. WYLLIE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

